diff --git a/src/simsopt/mhd/vmec.py b/src/simsopt/mhd/vmec.py
index e78a37c11..0214fab0f 100644
--- a/src/simsopt/mhd/vmec.py
+++ b/src/simsopt/mhd/vmec.py
@@ -308,7 +308,7 @@ def __init__(self,
                 raise RuntimeError(
                     "Running VMEC from simsopt requires VMEC python extension. "
                     "Install the VMEC python extension from "
-                    "https://https://github.com/hiddenSymmetries/VMEC2000")
+                    "https://github.com/hiddenSymmetries/VMEC2000")
 
             comm = self.mpi.comm_groups
             self.fcomm = comm.py2f()